Projects from HN posts

What are folks working on?

1689 projects published

Folk

A hand-drawn MMORPG where humans play in one world while bots and AI agents play in another, with both meeting in a shared town. Bots connect and play over plain HTTP, so a few lines of JS or an LLM agent is enough to participate. Designed to be fun for both normal players and engineers.

Builders @gudulin

AI & automationGames

Ziago

A realtime social gaming and quiz platform built to get people socialising and connecting, originally created during Covid and now being rebuilt with Convex; it has grown steadily to 380k total users.

Builders @Pietbull

Community & civicGames

Minimal X11 keycode/state printer

A minimal X11 application that prints the modifier state and keycode whenever a key is pressed, distilled from the st terminal and finally rebuilt from a minimal Rosetta Code window-creation example.

Builders @FattiMei

Developer tools

modmask

A small LLVM-based tool that prints the source code locations of functions unreachable from main, letting developers safely delete dead code without altering functionality; it was used to remove about 3000 lines of code in minutes.

Builders @FattiMei

Developer tools

Semiotique

This is an early-stage Python library with a vision of growing into a framework, SDK, and programming language for seamlessly meshing "plain old code" with LLM evaluations. Its runtime performs smart context engineering in the background to steer the LLM and improve its correctness, aiming to enable agentic applications that leverage LLM flexibility while retaining the determinism of regular code.

Builders @vkgcr

AI & automationDeveloper tools

kdeps

This framework enables secure and private AI agents by declaring workflow and agency behaviors in YAML and running them with local LLM models. Workflows can be exported to Docker, Kubernetes, ISO, or binary with the local llamafile or gguf model pre-baked, or run locally. It includes an agent-loop CLI for coding tasks using local LLM models as an alternative to mainstream coding agents, with a GitHub Actions job that harvests daily llamafile, gguf, and OpenRouter free models selectable via /model in the CLI.

Builders @jjuliano

AI & automationDeveloper tools

Telemetry Machine

An observability platform combining Honeycomb-style powerful querying, Datadog-style UI, and ClickHouse-backed speed, positioned as a lower-cost alternative to Honeycomb or Datadog, with most users connecting via an agent.

Builders @tmach32

Data & analyticsDeveloper toolsInfrastructure & hosting

Mostra

A web tool for collecting feedback on a live website, typed or spoken, with each feedback point anchored to the exact page element it refers to, ready to share with a team or feed to a coding agent.

Builders @dimamik

Developer toolsProductivity

Dyson sphere

An early-stage project bootstrapping a Dyson sphere, with a published research vision at muni.works.

Builders @ecto

Science & research

Orbitome

A mobile app that encourages in-person meetups among groups of friends: users place a pin on a map and share it with their group, friends with the app receive a notification, and those without it can be invited via a universal link to see the location, time, and number of confirmed attendees on the web (the app is required to confirm attendance). Built with FlutterFlow, Firebase, and local SQLite, and available in five languages.

Builders @cbramante

Community & civic

Hourbun

Existing invoicing tools became prohibitively expensive when Harvest raised its price roughly 10x, and other options suffered from bad UI/UX, so the author built an affordable, quick, and reliable alternative for invoicing clients.

Builders @fredwu

Business & financeProductivity

TempMailboxes

A temporary email mailboxes web service, shared via its domain link with no further details provided in the comment.

Builders @oron

ECG Interpretation Automation Tool

This tool automates part of ECG interpretation for medical work, aiming to free up doctors' working time and, if it works well, help save lives.

Builders @AndreiAntoce

AI & automationHealth & fitness

Soul Crystal

A revived browser-playable version of Soul Crystal, a German graphic/text adventure from 1992, built from reverse engineering work. It features an English translation, reimagined HD graphics, and voiced cutscenes.

Builders @s-macke

Games

G-Scope

G-Scope is a free, cross-platform application (Windows, macOS, Linux, Android) for digital microscopes. It works with almost any UVC microscope and several Wi-Fi models, and offers photo/video capture, calibrated measurements, annotations, panorama stitching, and PDF report generation. Some pro features require a one-time purchase. Everything runs locally with no account, subscription, cloud, or telemetry.

Builders @eduramiba

Science & research

OpenNorme

OpenNorme packages the entire Italian legal corpus into a single git repository containing all laws from 1861 to today, kept current through daily scraping of an official API. After every update, a GitHub Pages site is rebuilt with the new data so trends in legal changes can be explored via aggregations and charts, and it includes a Clippy-style assistant powered by an in-browser small language model.

Builders @dej611

Community & civicData & analytics

Center Court

This is a live NBA scores and stats site built around fast live box scores, intended to bridge the gap between slow mainstream sports sites and advanced stat-focused sites. It stores raw play-by-play payloads immutably and derives every statistic at request time as a pure fold over the event log, so a game's entire state can be re-derived at any point or time range. The site is server-side rendered with progressive JS enhancements, with immutable URLs cached behind a CDN, and includes features like score-over-time charts with a 'No garbage time' filter.

Builders @bretthopper

Data & analytics

MyJackfruit

AI-powered app-building platform (positioned as a competitor to Lovable and base44) that produces production-level apps in weeks and simple apps in a couple of hours, rather than 7-minute prototypes. Each app is developed with Systems Engineering: stakeholders and product values are mapped out quantitatively, and the AI codes against those quantified stakeholder and product values instead of a prompt. Apps are built on a scalable, secure, fast, access-controlled, ontology-based foundation with a focus on data ownership, and developers can use GitHub and all their usual tools.

Builders @KaiGilb

AI & automationDeveloper tools

Lipwise

A narration app with an LLM in the pipeline that can fix mistakes and perform transformations, capable of running fully local even on mediocre machines. It has no telemetry, is lightweight, and is fully open source.

Builders @lnenad

AI & automationCreative tools & media

Safe Drive

Mobile app that provides feedback on the driver's performance along their daily route, showing where they brake hard or drive smoothly and warning them a few seconds in advance at spots where they often brake hard. Still early stage, with plans to explore hardware such as a Raspberry Pi with OpenAuto to gain object-distance awareness around the car.

Builders @giis

Data & analytics

F# SAT solver

A SAT (boolean satisfiability) solver implemented in F#, with performance characteristics that are surprisingly unintuitive, even on unsatisfiable problems.

Builders @davidgrenier

Developer tools

Hamilton (Health Connect dashboard)

Android app that aggregates all of a user's Health Connect data into one dashboard, unifying metrics from Garmin watches, Withings scales, Samsung Health nutrition tracking, Liftosaur workouts, and other connected health apps. Built largely with AI, it is priced cheaply with no recurring fees.

Builders @hamilton_app

Health & fitness

The Dream Work

A platform connecting people and companies in tech to find jobs and talent; recently redesigned and still a work in progress.

Builders @vulk

Business & finance

Fraktur

Fraktur is a DJ mixing application that also works in the browser.

Builders @janesconference

Creative tools & media

Things To Have

A quirky wishlist app for keeping and sharing lists of things you want to have; recently released, with the builder currently focused on marketing, noting that ChatGPT-referred traffic now competes with paid traffic while offering better audience quality and retention.

Builders @brachkow

Lifestyle & hobbiesProductivity

hono-inertia

Version 4 of an Inertia.js adapter for the Hono framework, grown out of the tooling used to build Things To Have without relying on full-stack frameworks; it aims to be the best Inertia adapter for Hono and the best way to do SSR in Vue or other frontend frameworks.

Builders @brachkow

Developer tools

Mobile multiplexer app

A mobile multiplexer app with good scrolling, good composing, simple hotkey use, file sharing, and many quality-of-life features; the builder has used it daily on the go for about two months and is working through a setback after investing in the older herdr-tui protocol, which herdr has since moved away from.

Builders @brachkow

Developer tools

Flip Dot Clock Revival

Revives old single 5x7 flip dot display modules by designing custom driver electronics. Measurements were taken with a Fluke multimeter and Claude helped with the circuit design; a breadboard prototype worked and custom PCBs have been ordered. The goal is to restore around 30 modules and build clocks from them to gift to family and friends.

Builders @flomei

Hardware & DIY

AssetJay

AssetJay is an asset management tool for companies without IT departments, making it easy to keep track of all the devices and peripherals a company owns.

Builders @hholen

Business & financeProductivity